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WO2018147652A1 - Ligne de tension centrale pour câble de transmission d'électricité à haute capacité et procédé de fabrication de celle-ci - Google Patents

Ligne de tension centrale pour câble de transmission d'électricité à haute capacité et procédé de fabrication de celle-ci Download PDF

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Publication number
WO2018147652A1
WO2018147652A1 PCT/KR2018/001687 KR2018001687W WO2018147652A1 WO 2018147652 A1 WO2018147652 A1 WO 2018147652A1 KR 2018001687 W KR2018001687 W KR 2018001687W WO 2018147652 A1 WO2018147652 A1 WO 2018147652A1
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WO
WIPO (PCT)
Prior art keywords
core
resin
basalt
center
fiber
Prior art date
Application number
PCT/KR2018/001687
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English (en)
Korean (ko)
Inventor
허석봉
박재성
강부민
박재우
Original Assignee
일진복합소재 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 일진복합소재 주식회사 filed Critical 일진복합소재 주식회사
Publication of WO2018147652A1 publication Critical patent/WO2018147652A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
    • H01B9/025—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients composed of helicoidally wound wire-conductors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/02—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/02—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances
    • H01B3/025—Other inorganic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/40—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes epoxy resins
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
    • H01B9/024—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients composed of braided metal wire

Definitions

  • the present invention relates to a central tensile line that can be diagnosed soundness, and more particularly to a central tensile line with improved structural integrity and a method of manufacturing the same.
  • Such electrical cables include a central stranded steel core wound around a stranded aluminum conductor forming the core of the cable. These cables have been in use for decades without major changes. However, these cables have been vulnerable to bending under certain loads and to corrosion under certain circumstances.
  • the present invention provides a center tension line having a structure capable of making the outer surface of the center tension line as uniform as possible and increasing the interlayer bonding force, and a power transmission cable including the same.
  • the center tensile line according to the present invention is a basalt fiber (basalt fiber) or twisted basalt fiber bundles are formed twisted structure in a helical shape, the basalt fibers are a core core bound by the first resin; A center core protective layer formed of the first resin and formed outside the center core such that the basalt fibers included in the center core are not exposed; An intermediate core formed to surround the outside of the center core, wherein the carbon fiber bundles in which carbon fibers or twist structures are formed form a twist structure, and the carbon fibers bound by a second resin; And bundles of the glass fibers and the basalt fibers formed to surround the outer side of the intermediate core, wherein the bundles of the glass fibers and the basalt fibers are formed of any one of the glass fibers and the basalt fibers, and the twisted structure is formed in a helical shape.
  • the fibers include an outer core bound by a third resin, wherein the first resin of the central core protective layer is formed with the intermediate core in a state in which at least
  • center core protective layer may be integrally formed with the first resin of the center core.
  • the first resin may be formed of a thermosetting resin.
  • the second resin and the third resin may be any one of vinyl ester, epoxy, epoxy / acrylate, phenolic, urethane, and thermosetting resin.
  • the intermediate core 200 may be formed in a plurality of layer structures.
  • the method of producing a central tensile line comprises the steps of: impregnating any one of the basalt fibers and the basalt fiber bundle forming the twist structure in the first resin; Forming a twisted structure of the impregnated basalt fiber or helical shape into a helical shape and hardening to form a central core; Forming an intermediate core by winding a carbon fiber impregnated in the second resin in a helical shape while heating a portion of the outer layer of the cured central core in a helical shape; And winding one of the glass fibers and the basalt fibers impregnated into the third resin in a helical shape to form an outer core.
  • the first resin may be a thermosetting resin.
  • the forming of the central core may include a step of compressing the diameter within a predetermined standard through a drawing die in a state where the twist structure is formed in the helical shape.
  • the step of removing a predetermined amount of the first resin through the drawing die may be such that the basalt fibers contained in the central core is not exposed.
  • the center tensile line according to the present invention forms a center core using basalt fibers, and forms a middle core and an outer core in a state in which the surface thereof is partially melted, thereby making the surface of the center tensile line uniform and interlaminar structural stability. Can be improved.
  • FIG. 1 is a partial cutaway perspective view showing a state of a power transmission cable according to an embodiment of the present invention.
  • FIG. 2 is a schematic diagram showing a state of a overhead transmission line as an example of a transmission cable.
  • FIG 3 is a cross-sectional view illustrating a state of a center tensile line according to an exemplary embodiment.
  • FIG. 4 is a perspective view showing the appearance of basalt fibers according to one embodiment forming a central core.
  • FIG. 5 is a schematic diagram illustrating a process of forming a central core according to an embodiment of the present invention.
  • FIG. 6 is a schematic view showing a step of forming a center tensile line of the present invention.
  • FIGS. 1 and 2 A high capacity power transmission cable (enhanced power transmission cable) according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2.
  • 1 is a cutaway perspective view schematically illustrating a high capacity power transmission cable according to an embodiment of the present invention
  • FIG. 2 is a schematic view schematically showing a state in which a high capacity power transmission cable according to an embodiment of the present invention is installed.
  • the high capacity power transmission cable 1 includes aluminum conductors 1a and 1b and a center tension line 10 forming a core inside.
  • this type of high capacity power transmission cable is known as an aluminum conductor composite core (ACCC), a reinforcement cable, a stranded overhead transmission and a wiring conductor.
  • ACCC aluminum conductor composite core
  • reinforcement cable a reinforcement cable
  • stranded overhead transmission a wiring conductor.
  • wiring conductor typically, such conductors are used to transmit and wire high power and form, for example, the backbone of a national grid.
  • the high-capacity power transmission cable 1 includes aluminum strands having a trapezoidal shape in a plurality of cross-sections spirally surrounding the central tensile line.
  • the aluminum conductor first layer 1b is further surrounded by the aluminum conductor second layer 1a having a trapezoidal cross section.
  • the aluminum conductors 1a and 1b function as passages for transmitting power.
  • the outer side of the aluminum conductors 1a and 1b may further include an insulating first protective layer (not shown) as a coating for protecting against corrosion or the like caused by an external environment.
  • the first protective layer may be formed using an epoxy resin or the like.
  • the center tensile line 10 included in the high capacity power transmission cable 1 according to the present embodiment is known as a synthetic core, etc., and serves to reinforce the tensile force of the high capacity power transmission cable 1.
  • the center tensile line 10 according to the present embodiment includes an outer core 100, an intermediate core 200, and a central core 300.
  • the center core protective layer 390 is formed outside the center core 200.
  • center tensile line 10 will be described in detail later with reference to the drawings.
  • the high capacity power transmission cable 1 may be installed in the form of overhead transmission lines connected between electric poles and power transmission towers 2, and transmits high voltage and high capacity power.
  • the transmission voltage of this high capacity power transmission cable 1 is typically in the range of 2,400 V to 765,000 V, but is not limited thereto.
  • the high-capacity power transmission cable 1 is formed to be flexible and flexible, and is transported in a wound state using a drum for transport and installation, and installation work is performed.
  • FIGS. 3 and 4 are schematic cross-sectional views showing a state of a central tensile line according to an embodiment.
  • the center tensile line 10 includes an outer core 100, an intermediate core 200, and a central core 300.
  • the central core 300 is formed using basalt fibers and a resin.
  • Basalt fibers are gray-brown fibers made of basalt and melt at about 1400 ° C. Limestone may be added as needed.
  • the molten basalt is made of fibers by centrifugal processes and can be produced by blowing through a fine nozzle.
  • Basalt fiber is 50% silicon dioxide, 12% aluminum oxide, 11% calcium oxide, 10% magnesium oxide, 7% iron (II) oxide, 5% alkali metal oxides Na2O and K2O, 3% titanium oxide (IV) and 2% different It has an average chemical composition of oxide.
  • the resin forming the core core 300 is preferably formed of a thermosetting material.
  • the center core 300 may be manufactured by forming a twist structure in a helical shape from a basalt fiber 301 impregnated in resin or a bundle of basalt fibers 301 in which a twist structure is formed.
  • the central core protective layer 390 is formed on the outside of the central core 300 so that the basalt fibers included in the central core 300 are not exposed to the outside.
  • the central core protective layer 390 may be at least one of resins provided to bind the basalt fibers included in the central core 300, and may be excessively included in the die after forming the twisted structure of the impregnated basalt fibers. In the process of removing the resin, it is preferable to form a predetermined amount to remain on the surface of the central core (300). That is, through the above method, the central core protective layer 390 and the resin layer in the central core 300 may be integrally formed.
  • the center core protective layer 390 is formed in a state in which at least a portion of the resin layer forming the intermediate core 200 is molten.
  • the resin for forming the core core protective layer 390 uses a thermosetting material. The process for forming such a structure will be described later.
  • basalt is one of the next generation fiber materials in terms of production technology and quality compared to glass.
  • the melting point of basalt reaches about 1450, but depends on chemical composition and is higher than 300 compared to E-glass fiber.
  • the characteristics of basalt fibers are difficult to generalize, and there are many areas that have not yet been identified because they cannot be specified / objectived.
  • Basalt is a natural rock. The composition of the rock depends on the raw stone, and the chemical composition of the rock varies greatly.
  • the high tensile strength and Young's modulus are due to the high content of aluminum oxide and silicon dioxide, and the excellent heat resistance and thermal conductivity are due to the high iron oxide component.
  • the higher the content of the metal oxide the better the acid resistance
  • the higher the content of the silicon dioxide the poor the alkali resistance.
  • basalt fiber is cheaper in raw materials and basalt fiber can be used as an alternative material for E-glass in terms of product quality.
  • the intermediate core 200 is provided to surround the outside of the central core 300.
  • the intermediate core 200 may be formed using carbon fiber and epoxy resin. That is, a plurality of carbon fiber bundles are used as a reinforcing member responsible for tensile force, and an epoxy resin is used to bind them.
  • the carbon fiber may be provided on the outer circumferential surface of the optical cable 305 in a helical shape.
  • epoxy resin vinyl ester, epoxy / acrylate, phenolic, urethane, thermosetting resin can be used.
  • the intermediate core 200 is preferably formed using a carbon fiber and an epoxy resin, but may be formed in a plurality of layer structures according to a manufacturing method. Each of the plurality of layers can be mixed with different materials, ie with different carbon fiber compositions or non-carbon fibers.
  • the outer core 100 is provided to surround the intermediate core 200.
  • the outer core 100 is formed of an insulating material.
  • the outer core 100 may be formed of glass fiber or basalt fiber.
  • the outer core 100 may be made of glass fiber or basalt fiber as described above, and may use an epoxy resin as a binding material.
  • a vinyl ester, an epoxy / acrylate, a phenolic, urethane, or a thermosetting resin may be used in place of or together with the epoxy resin.
  • the outer core 100 and the intermediate core 200 formed of glass fiber or basalt fiber may be provided by winding in a helical shape.
  • the protective layer may also include an outer core protective layer (not shown) surrounding the outer core 100.
  • the protective layer ie the protective coating, surrounds the outer core 100 and has a radial thickness.
  • the protective coating provides not only UV protection but also potential for surface resin corrosion protection and surface electrical tracking.
  • surface coatings may include fiber, paint, and polymer coatings of Reemay based (polyethylene terephthalate) such as HETROLAC, such as organic surfacing veils such as NEXUS or surface acrylic based coatings. .
  • FIG. 5 is a schematic view illustrating a method of forming a center core according to an embodiment.
  • a central core is first formed. First, the basalt fiber 301 is unwound from the bobbin, and the unwinded basalt fiber 301 is impregnated in the resin 302 in a molten state, and a twisted structure is formed and then hardened to form a central core 300.
  • the core core 300 may be formed by a drawing process.
  • the basalt fiber 301 unrolled from the bobbin may form an individual stranded structure, followed by a resin impregnation bath. It is impregnated to resin 302 of the molten state. Subsequently, the impregnated basalt fibers 301 are drawn together through a first die to compact together to form a predetermined specification. The first die also functions to remove resin that is excessively contained in the basalt fibers 301 in which the individual twist structures are formed. At this time, in the process of removing a predetermined amount of the first resin through the drawing die, the basalt fibers included in the core core 300 are surrounded by the resin, thereby preventing the basalt fibers from being exposed to the outside. ).
  • the twisted structures of the individual basalt fibers 301 stranded structures as described above are formed and then cured through the first curing unit to form the core core 300.
  • the formed core core 300 is wound on another drum and then provided to the process for the formation of the intermediate core and the outer core.
  • FIG. 6 is a schematic diagram illustrating a process of manufacturing a center tensile line according to an embodiment.
  • the center core 300 wound on a drum or the like in a state where the resin is cured is unwound and provided to manufacture a center tensile line.
  • the intermediate core is formed by impregnating the carbon fiber 101 having the twisted structure with an epoxy resin or the like in a resin impregnation tank, and then applying it to the outside of the central core 300. At this time, the central core 300 unwound from the drum allows at least a part of the surface to be molten through the heating part.
  • the interface between the center core 300 and the intermediate core is applied by applying the carbon fiber 101 or the twisted structure carbon fiber 102 impregnated with an epoxy resin or the like while at least a part of the outer surface of the center core 300 is molten. This should not be formed distinctly.
  • a physically mixed boundary layer may exist between the central core 300 and the intermediate core 200, or a physical / chemical interface may be formed according to a material. By forming a layer structure on such an interface, structural stability can be maintained even when the transmission cable is bent for external force, and stress can be prevented from being concentrated on any one layer.
  • the outer core can be formed in the same manner as the intermediate core.
  • the central tensile line is formed by impregnating the glass fiber 202 or the like having the twisted structure with the resin in the resin impregnation tank and then applying it to the outside of the intermediate core.

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  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Ropes Or Cables (AREA)

Abstract

La présente invention concerne une ligne de tension centrale et un procédé de fabrication de celle-ci. La ligne de tension centrale, selon la présente invention, comprend : une âme centrale dans laquelle des faisceaux de fibres de basalte ayant une structure torsadée forment la structure torsadée de forme hélicoïdale, les fibres de basalte étant liées grâce à une première résine ; une couche de protection d'âme centrale formée grâce à la première résine et formée sur l'extérieur de l'âme centrale de sorte que les fibres de basalte présentes dans l'âme centrale ne soient pas exposées ; une âme intermédiaire dans laquelle des fibres de carbone ou des faisceaux de fibres de carbone ont une structure torsadée, les fibres de carbone étant liées grâce à une deuxième résine ; et une âme extérieure formée pour entourer l'extérieur de l'âme intermédiaire et dans laquelle des fibres de verre et/ou les faisceaux de fibres de basalte ou les fibres de verre et les faisceaux de fibres de basalte ayant une structure torsadée forment la structure torsadée de forme hélicoïdale, les fibres de verre et les fibres de basalte étant liées grâce à une troisième résine.
PCT/KR2018/001687 2017-02-08 2018-02-08 Ligne de tension centrale pour câble de transmission d'électricité à haute capacité et procédé de fabrication de celle-ci WO2018147652A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020170017385A KR101916231B1 (ko) 2017-02-08 2017-02-08 고용량 송전케이블용 중심인장선 및 이를 제조하는 방법
KR10-2017-0017385 2017-02-08

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112596182A (zh) * 2020-12-30 2021-04-02 江苏永鼎股份有限公司 一种光缆中心加强件垫层的挤塑工艺
CN113808786A (zh) * 2021-09-17 2021-12-17 广东鑫源恒业复合材料科技有限公司 一种超柔多股并合碳纤维复合芯导线及导线检测装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102560551B1 (ko) * 2020-11-18 2023-07-26 재단법인 한국탄소산업진흥원 송전케이블 코어 및 이를 제조하는 방법

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KR20070014109A (ko) * 2003-10-22 2007-01-31 씨티씨 케이블 코포레이션 알루미늄 컨덕터 합성코어 보강 케이블 및 그 제작방법
KR100817982B1 (ko) * 2007-02-12 2008-03-31 엘에스전선 주식회사 가공 송전선 인장선용 고분자 복합 선재 및 그 제조방법
US20100038112A1 (en) * 2008-08-15 2010-02-18 3M Innovative Properties Company Stranded composite cable and method of making and using
KR101477720B1 (ko) * 2007-02-15 2014-12-30 어드밴스드 테크놀로지 홀딩스 리미티드 전기 컨덕터 및 전기 컨덕터용 코어
KR20150003937A (ko) * 2013-07-01 2015-01-12 (주)세이프코리아 송전선용 도전성 코어와 그 제조방법

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KR20070014109A (ko) * 2003-10-22 2007-01-31 씨티씨 케이블 코포레이션 알루미늄 컨덕터 합성코어 보강 케이블 및 그 제작방법
KR100817982B1 (ko) * 2007-02-12 2008-03-31 엘에스전선 주식회사 가공 송전선 인장선용 고분자 복합 선재 및 그 제조방법
KR101477720B1 (ko) * 2007-02-15 2014-12-30 어드밴스드 테크놀로지 홀딩스 리미티드 전기 컨덕터 및 전기 컨덕터용 코어
US20100038112A1 (en) * 2008-08-15 2010-02-18 3M Innovative Properties Company Stranded composite cable and method of making and using
KR20150003937A (ko) * 2013-07-01 2015-01-12 (주)세이프코리아 송전선용 도전성 코어와 그 제조방법

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112596182A (zh) * 2020-12-30 2021-04-02 江苏永鼎股份有限公司 一种光缆中心加强件垫层的挤塑工艺
CN113808786A (zh) * 2021-09-17 2021-12-17 广东鑫源恒业复合材料科技有限公司 一种超柔多股并合碳纤维复合芯导线及导线检测装置

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